Time to start build next version of antenna trackers. As antennas are getting bigger and bigger we planned to make one heavyduty antenna tracker that can turn 2kg antenna clusters.
- 360 yaw with 1 degree accuracy
- -5 - 90 degree tilt control
- Accelerometer measurement for X/Y and Z axis
- Compass for accurate "heading" measurement
- LCD display and control keyboards for generic configuration
- DC motor control for both Yaw and Tilt axis
- Standalone battery supply, with 3-4S battery
Initial plan is to make one tracker with strong DC motors, future versions might have stepping motors. Main difference between stepping and DC motors is that steppers needs to have constant current running on their coils to keep it not moving and when you run from batteries that can be a problematic. So DC motor with gearboxes were chosen to the task.
Also to speed up development belt/pulley system was chosen to turn things
Tilt axis will have small IMU to measure tilt axis angles. Later it can be used to measure level of whole antenna tracker system. Yaw will be measured with small compass board.
Software to run motors and IMU is already working and how we are doing mechatronics for whole system.
Base electronics will be based on ArduStation mega and jD-IOBoard.
Tracker listens MAVLink data and calculates from that it's yaw heading and antenna tilt angles.
Do we have support for Mission Planner type connection has not yet been decided but allowing direct telemetry modem and/or USB connection would not be bad idea either.
Jani / jDrones